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经营范围
发明名称
Optophone
摘要
申请公布号
US3007259(A)
申请公布日期
1961.11.07
申请号
US19600013799
申请日期
1960.03.09
申请人
BATTELLE MEMORIAL INSTITUTE
发明人
ABMA JOHN S.;MASON LAWRENCE J.;RICE DAVID REAGAN
分类号
G09B21/00
主分类号
G09B21/00
代理机构
代理人
主权项
地址
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